Hyperaccumulation of trace elements by plants

Reeves, Roger D.

doi:10.1007/1-4020-4688-x_2

Cited by 161 publications

(135 citation statements)

References 70 publications

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“…Universality of Mn hyperaccumulation in C. sciadophylloides Mn in soil; Reeves 2006). Therefore, C. sciadophylloides leaves were sampled from trees growing on soils whose Mn levels were not unusually high.…”

Section: Resultsmentioning

confidence: 99%

Manganese hyperaccumulation from non-contaminated soil inChengiopanax sciadophylloidesFranch. et Sav. and its correlation with calcium accumulation

Mizuno

Emori

Ito

2013

Soil Science and Plant Nutrition

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The objective of this study was to explore the ability of Chengiopanax sciadophylloides Franch. et Sav. to hyperaccumulate manganese (Mn). We were particularly interested in (1) Mn uptake ability relative to soil-Mn availability, (2) the potential use of this species in phytomining, and (3) potential key physiological factors associated with Mn hyperaccumulation ability. Among plants sampled from 17 locations in their native Japan provenance, the maximum foliar Mn concentration was 23,000 mg kg −1 dry weight (dw; mean: 11,000 mg kg). Soils from all sites examined contained low to normal Mn concentrations. There were no significant relationships detected between several soil factors and foliar Mn concentrations, although we found a strong positive correlation between foliar Mn and calcium (Ca) concentrations. Half of the foliar Mn was readily extractable with water, and almost all Mn was extractable with hydrochloric acid (HCl). Furthermore, a highly purified Mn compound was precipitated from leaf ash solutions when pH was adjusted to 8-10. We demonstrated that C. sciadophylloides has an extraordinary Mn-accumulating ability in non-contaminated soil and that Ca accumulation is correlated with Mn hyperaccumulation. We also showed that collecting Mn from C. sciadophylloides is easy and straightforward. We discuss the potential for using the plant in Mn phytomining.

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Section: Resultsmentioning

confidence: 99%

Manganese hyperaccumulation from non-contaminated soil inChengiopanax sciadophylloidesFranch. et Sav. and its correlation with calcium accumulation

Mizuno

Emori

Ito

2013

Soil Science and Plant Nutrition

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“…There are some extreme examples of soils being toxic to almost all species of higher plants, whereas in other cases a characteristic flora of metal-tolerant species may develop (Reeves 2006). In plants that are able to survive in metal-polluted environments, three basic metal uptake and tolerance strategies of exclusion, indication and accumulation evolved for coping with excess metals (Baker 1981(Baker , 1987.…”

Section: Metal Hyperaccumulation: Terminology and Definitionsmentioning

confidence: 98%

“…These effects depend on plant species, the particular assemblage of enriched elements, and the physical and chemical characteristics of the soil (Reeves 2006).…”

Section: Metal Hyperaccumulation: Terminology and Definitionsmentioning

confidence: 99%

Arbuscular Mycorrhiza in Metal Hyperaccumulating Plants

Regvar

Vogel‐Mikuš

2008

Mycorrhiza

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“…En condiciones normales los procesos geoquímicos que originan las rocas determinan su contenido en metales pesados (Roca, 2004). Rocas básicas y ultramáficas, solidificadas en primer lugar a partir del magma, incorporan metales pesados como el Co, Ni, Zn y Cr por reemplazamientos isomórficos de Fe y Mg. Las arcillas incorporan elementos como el Fe, Zn, Cr y Mn al sustituir el Al de los octaedros, y adsorben gran cantidad de Cu, Co, Mn, Ni y Zn gracias a su gran superficie específica (Reeves, 2006). Las actividades humanas han ejercido un efecto considerable en la concentración y movilidad de los metales en suelos, así como un destacable efecto medioambiental y, en algunas ocasiones, graves efectos a la salud de los seres vivos.…”

Section: Introductionunclassified

Evaluación Físico - Química De Metales Tóxicos en El Rio Grande, Ananea - Crucero Puno

Ponce

2018

Rev. Investig.

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RESUMENLas principales afecciones al medio ambiente a nivel global, se relacionan con el agotamiento y contaminación del recurso natural agua. En nuestra región la cuenca Azángaro, principal afluente del Lago Titicaca, sufre contaminación por metales pesados y metaloides producto de la actividad de explotación minera y pasivos mineros existentes en la zona, el rio Grande es utilizado para el riego de áreas agrícolas y ganadera en las partes bajas antes de evacuar sus aguas al Lago Titicaca. El trabajo de investigación pretende mostrar los niveles de contaminación del rio Grande por medio del análisis químico de los metales pesados y metaloides. Para realizar el trabajo de investigación, se ha seleccionado 05 puntos de muestreo, tomando como criterio la contaminación por actividad antropogénica y litológica en el rio Grande que recorre las provincias de Ananea y Crucero. La toma de muestras se realizó durante dos épocas del año 2016, la primera, en mayo y la segunda en octubre. Los resultados del análisis de aguas indican; que los valores de los metales tóxicos en evaluación Al (149.869-33.569mg/L); Pb (0.186-0.059mg/L); As (0.712-0.132mg/L); Fe (16.000-65.605mg/L) en los puntos 1 y 2, Ni (0.214mg/L) en el punto 2 y Fe (5.469-9.760mg/L) en el punto 4 y 5, de la Primera evaluación (época de lluvias), se encuentran por encima de los estándares de calidad ambiental de aguas. La contaminación por el movimiento de grandes cantidades de mineral que se realiza para recuperar el oro por: dragado y lavado, genera materia en suspensión (silicio como coloide), algunos mineros están utilizando coagulantes, por eso aparece altas concentraciones de Aluminio, convirtiéndose ambos (Al y Si) en elementos tóxicos haciendo al rio Grande no apto para riego y consumo humano antes de ser tratada adecuadamente; El pH (5.40-5.80) es ligeramente acido por lo cual solubiliza y moviliza cierto número de metales tóxicos como el Pb, As, Al y Ni y son arrastrados rio abajo y aumenta la conductividad.Palabras Claves: Actividad antropogénica, agua, contaminación, minería, Ramis, Rio Grande ABSTRACTThe main affections to the environment at global level, are related to the depletion and contamination of the natural water resource. In our region, the Azángaro basin, the main tributary of Lake Titicaca, suffers from heavy metal and metalloid contamination as a result of the mining activity and mining liabilities existing in the area, the Rio Grande is used for the irrigation of agricultural and livestock areas in the lower parts before evacuating its waters to Lake Titicaca. The research work aims to show the contamination levels of the Rio Grande through the chemical analysis of heavy metals and metalloids. To carry out the research work, 05 sampling points have been selected, taking as a criterion the contamination by anthropogenic and lithological activity in the Rio Grande that runs through the provinces of Ananea and Crucero. Sampling took place during two seasons of 2016, the first in May and the second in October. The results of the water an...

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Hyperaccumulation of trace elements by plants

Cited by 161 publications

References 70 publications

Manganese hyperaccumulation from non-contaminated soil inChengiopanax sciadophylloidesFranch. et Sav. and its correlation with calcium accumulation

Manganese hyperaccumulation from non-contaminated soil inChengiopanax sciadophylloidesFranch. et Sav. and its correlation with calcium accumulation

Arbuscular Mycorrhiza in Metal Hyperaccumulating Plants

Evaluación Físico - Química De Metales Tóxicos en El Rio Grande, Ananea - Crucero Puno

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